Varroa destructor mites (one shown in pink on a honeybee) have long been a plague for honeybees. But they may have been misunderstood for decades. It may not so much bee “blood” but fat they’re after.

A salmon’s sense of smell is critical for its survival. But rising acidity in the world’s oceans could hamper the fish’s ability to detect danger, a new study finds.

For a decade, scientists feared this species was extinct. Then they discovered five Sehuencas water frogs in Bolivia, including this female named Juliet. Researchers plan to introduce her to Romeo, a frog in captivity. Until now, Romeo was the last known survivor of his species.

This pterosaur (seen here in an illustration) was covered in different sorts of hairlike fuzz. Their structure is the same as the protofeathers that covered some dinosaurs.